Home / 84,513.57-126,732.02-31,885.71

Finding the Fourth Proportional to 84,513.57, 126,732.02 and 31,885.71

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Solution

The fourth proportional to 84,513.57, 126,732.02 and 31,885.71 is: 47,814.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,513.57 : 126,732.02 = 31,885.71 : x
  2. Step 2: Convert to fraction form
    84,513.57/126,732.02 = 31,885.71/x
  3. Step 3: Cross multiply
    84,513.57x = 126,732.02 × 31,885.71
  4. Step 4: Simplify right side
    84,513.57x = 4,040,940,278.01
  5. Step 5: Solve for x
    x = 4,040,940,278.01/84,513.57
  6. Step 6: Final answer
    x = 47,814.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.